Fix ports for service and enable istio support out-of-the-box

[Hronom]

What was changed

Fix ports for service and enable Istio support out-of-the-box.

Why?

Checklist

1. Closes Temporal services are not starting when deployed in istio enabled namespace #338

2. How was this tested:

Tested on cluster with Istio enabled and strict mTLS.

3. Any docs updates needed?

[CLAassistant]

All committers have signed the CLA.

[CLAassistant]

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[Hronom]

Also I signed the CLA, not sure why the old comment is drawn

[robholland]

Please tweak the docs a little as per suggestions, but otherwise happy to merge. Thanks for your patience while exploring alternatives.

[Hronom]

@robholland applied suggested changes. Please trigger that job that is currently blocking the merge. Thanks!

[Hronom]

@robholland one more time, I merged suggestions. Seems like only you can merge it. Let me know if I missed anything

[robholland]

Thanks for your work and patience :)